After an accident on a winding road, four teens make the fatal mistake of dumping their victim’s body into the sea. But exactly one year later, the dead man returns from his watery grave and he’s looking for more than an apology Four high school teens in a small coastal town celebrate their graduation before they go off to college, but the celebration is abruptly cut short when they accidentally hit a drifter along the road. Fearing the repercussions, they dispose of the evidence and make a vow to never speak of it again, but a year later they receive threatening messages and terrifying scares. Setup is familiar, plotting is routine, but good direction, solid performances,As they celebrate their high school graduation, four friends are involved in a hit-and-run accident when their car hits and apparently kills a pedestrian on an isolated roadway. They dispose of the body and vow to keep the incident a secret, a year later somebody starts sending them letters bearing the warning “I Know What You Did Last Summer”.